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The more (sharp) curves, the lower the risk

机译：曲线越（清晰），风险越低

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摘要

The risk of accident in horizontal curves is a complex function of at least the following characteristics of the curve: the radius of the curve; the length of the curve (and the resultant deflection angle); the presence of a spiral transition curve; the super-elevation of the curve; the distance to adjacent curves; and whether the curve is on a flat road, a straight gradient or a vertical curve. The interactions between these characteristics in determining accident risk in horizontal curves is only beginning to be understood. This paper summarises the results of studies that have investigated the interaction between the radius of a horizontal curve and the distance to adjacent curves. The shorter the mean distance between curves, the lower is the increase in risk for a given curve radius. The sharper neighbouring curves are, the lower is the increase in risk for a given curve radius. Thus, overall risk may not be higher on a road consisting mostly of sharp curves than on a road consisting mostly of straight sections with a few curves located far apart from each other.
机译：水平曲线发生事故的风险至少是曲线的以下特征的复杂函数：曲线的半径；曲线的长度（以及由此产生的偏转角）；螺旋过渡曲线的存在；曲线的超高；到相邻曲线的距离；以及该曲线是在平坦的道路，直的坡度还是垂直的曲线上。在确定水平曲线中的事故风险时，这些特性之间的相互作用才刚刚开始被理解。本文总结了研究水平曲线半径与相邻曲线距离之间相互作用的研究结果。曲线之间的平均距离越短，给定曲线半径的风险增加就越小。相邻曲线越陡，给定曲线半径的风险增加越小。因此，在主要由陡峭弯道组成的道路上，总风险可能不会比在主要由具有几条相互远离的弯道的直线路段组成的道路上更高。

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